To determine the presence of anion and cation in the given salt
| Experiment | Observation | Inference |
|---|---|---|
| Salt + Conc H₂SO₄ | Violet vapors evolve | I⁻ may be present |
| Confirmatory Test | ||
| Silver Nitrate Test Salt Solution + Dilute HNO₃ + AgNO₃ solution | Yellow ppt insoluble in NH₄OH | Presence of I⁻ anion is confirmed |
| Experiment | Observation | Inference |
|---|---|---|
| Salt + NaOH solution | Evolution of vapours with ammonical smell | NH₄⁺ may be present |
| Bring glass rod dipped in conc. HCl near the mouth of the test tube | Dense white fumes evolve | NH₄⁺ may be present |
| Confirmatory Test | ||
| Nessler's Reagent Test Salt solution + Nessler's reagent | Reddish-brown ppt is obtained | Presence of NH₄⁺ is confirmed |
The given salt contains NH₄⁺ ions as cation and I⁻ ions as anion. The salt is NH₄⁺I⁻.